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The difference between hard and soft water
Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain water or distilled water. Make some soap solution by dissolving soap shavings or powdered soap in a little warm water. Place equivalent amounts of hard and soft water in every of two bottles. Add soap solution to the soft water with a dropper, some drops at a time. Shake the bottle well after every addition. Count the number of drops of soap solution required to produce suds about 1 cm thick on the top.
Safety aspects in a detailed way here explained the need for a personal code of behaviour and then gave a list of instructions which could serve as code of practice in a laboratory
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A lift pump To change the syringe and make a simple lift pump, burn two holes by the piston with a hot wire and fit a thin piece of leather or rubber above them to act as a val
alternative naturalenergyresourcebasedo on undergroundhot water source
Pulse products: The important processed pulse products are puffed chickpea and pea, besan, papads, pulse-based weaning foods, quick cooking dhals, and canned dry peas Oils
Explain Presence of Foodstuffs - Movements of Gall Bladder Presence of foodstuffs: Fatty foods particularly cream, fatty acids and proteins to a less extent, stimulate the cont
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all of these are examples of fossil fuel EXCEPT:coal,petroleum,corn oil or natural gas?
Drinking straw hydrometer Procure a drinking straw or a stout natural straw about 20 cm long. If it is not 'water-proof' dip it in melted candle wax and permit it to dry. Seal
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